Commanded and estimated engine torque adjustment

US8041487B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• James L. Worthing · Munith, US
• Michael Livshiz · Ann Arbor, US
• Christopher E. Whitney · Commerce, US
• Ning Jin · Novi, US
• Martin Weber · Jeffery Road, DE
• Enrico Tropschug · Hattersheim, DE

Key dates

• Filing date: Mar 4, 2009
• Grant date: Oct 18, 2011
• Expiry date: Apr 28, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2250/26
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An engine control system comprises first and second integral modules, a summer module, and a torque adjustment module. The first integral module determines an engine speed (RPM) integral value based on a difference between a desired RPM and a measured RPM. The second integral module determines a torque integral value based on a difference between a desired torque output for an engine and an estimated torque of the engine. The summer module determines an RPM-torque integral value based on a difference between the RPM and torque integral values. The torque adjustment module determines a torque adjustment value based on the RPM-torque integral value and adjusts the desired torque output and the estimated torque based on the torque adjustment value.